pissed!!!!!!!!

[jasonconway5]

Nothing pisses me off quite like spending hours replacing a part and it not fixing the problem. I had knock sensor codes so I replaced them and intake gaskets. Cleared the codes, Drove it 3 miles and the damn knock sensors read low input on both. Wtf!?!?!?!?!?!?!?!?!,!,! I'm so sick of fighting codes for stupid emissions/inspection s horse sh*t!

Now that I've vented, on to my question. Has anyone ever had all the emissions crap tuned out of the computer? Is it possible to get a tune that will allow me to pass inspection every time? I am going to check my spark plug gap tomorrow and make sure thats not the culprit.

 

[jasonconway5]

Nobody?

 

[jasonconway5]

Bump

 

[NathanJax]

This forum is kinda slow on the weekends... especially at 2am Sunday morning. I'm sue come Monday someone will have some answers for you...

 

[jasonconway5]

This forum is kinda slow on the weekends... especially at 2am Sunday morning. I'm sue come Monday someone will have some answers for you...

Thanks

 

[Rivieraracing]

What are the codes you are getting? Are they the same codes you got before the knock sensor and intake gasket swap? Does it drive any different now?

As for tuning out knock sensors, not sure if you can and not sure if you would want to, but hopefully someone will chime in on some answers for you!

 

[jasonconway5]

P0327 and p0332, feels like runs a little better, not much, could be just do to the new intake gaskets. Slight rocker rattle under low rpm load still, don't know if that's due to the knock sensors retarding the timing or what. Going to check spark plug gap and try 93 octane to see if that fixes it.

 

[afpj]

Did you check connectors for corrosion ? I think I remember seeing that mentioned Before in regards to knock sensor issues.

 

[jasonconway5]

Did you check connectors for corrosion ? I think I remember seeing that mentioned Before in regards to knock sensor issues.

Yes, both were fine as far as corrosion goes. However, one broke when I discinnected. The plastic just fell apart, so I replaced that connector. Just squeezed the spark plug gap own to .040, going to go drive it and see what happens. Also, would a bad maf sensor cause a lean mix which would cause the knock sensir codes? A few weeks ago I got a maf code but it went away.

 

[jasonconway5]

Ok, so changing the gap didn't fix the problem. Added lucas to the oil and 108 octane booster. Cleared thecodes and even reset the fuel trim level (Disconecting the battery cables and touching them together for 10 seconds and leaving the battery disconnected for 20 mins) drove to work the morning, still gave codes. Im at a loss as to where to look next.

 

[jasonconway5]

Cleared the codes, drove it 20 miles home and it only gave me the code for 1 sensor, the bank 1 knock sensor. Not sure which one that is, but either way, the problem Still exists. Someone said to check the alternator for ac volts which can cause issues with sensors. Anyone heard of this?

 

[afpj]

Do you have iridium plugs? I don't think you're suppose to adjust gap on those. Sorry, don't know if erratic alternator voltage can cause knock senor code but have heard it causing multiple other issues. Iirc bank 1 driver side.

 

[jasonconway5]

Bosch platinums. Was told to get ac delco.

 

[OHSIXX]

Yes only run AC Delco.

 

[jasonconway5]

checked the voltage from the pcm to the connector at the connector and it was only reading 0.013 with the key switched on and engine off. is this too low? whats it supposed to read?

---------- Post added at 08:03 PM ---------- Previous post was at 07:04 PM ----------

Any voltage experts in here?

 

[franksbanks]

Where did you get your replacement sensors? Are they AC DELCO's? DURALAST?

What are the part #'s you have?

I’m in the process of gathering mine
Bank 1 is my faulty one as well- but I’m going to replace both while I’m in there.

I did some searches last week and many people highly suggested to get a new harness- maybe your harness is not making sufficient contact to read the correct voltage.

I’m not an expert on the voltage- but I would try and read the other sensor and see what voltage it’s giving.

 

[jasonconway5]

Where did you get your replacement sensors? Are they AC DELCO's? DURALAST?

What are the part #'s you have?

I’m in the process of gathering mine
Bank 1 is my faulty one as well- but I’m going to replace both while I’m in there.

I did some searches last week and many people highly suggested to get a new harness- maybe your harness is not making sufficient contact to read the correct voltage.

I’m not an expert on the voltage- but I would try and read the other sensor and see what voltage it’s giving.

I got the el cheapos from ebay after reading good reviews. paid $25 for both. I replaced one of the harness connectors because the plastic broke the other connector was fine, no corrosion. If im not mistaken, the PCM is supposed to be putting out 5V TO the sensors themselves. Im going to check the voltage at the PCM this weekend after I figure out which wires to test. If my voltage is still too low I was told the PCM could be bad and i'll be replacing that before I go pulling the intake back off.

 

[jasonconway5]

Just going to leave this here for anyone else who may have this problem. Took me alot of time of reading, but sense I got my KS from ebay as well, im going to get some from the stealership tomorrow and see if this is my problem as well as this guys was!
problhttp://www.justanswer.com/gm/73t62-gm-chevy-suburban-knock-sensor-show-code-p0327-p0332.htmlem